... .high quailty black Drywall screw 2.size of the screw:M1.6-M9.5 3.surface of screw:zp,hdg,black,oxide ... and produce according to customer requested.standard of black Drywall screw: JIS,BS,GB,ISO,DIN,AISIsize: according to customers ... box and cantons.We will ship the black Drywall screw within 3-5 working days after confirming customers' payment ... a broader service platform for you. black Drywall screw